海洋科学2017，Vol.41Issue(8)：40-45,6.DOI:10.11759//hykx20170119003
绿鳍马面鲀精子的超微结构
Ultrastructure of spermatozoa of Thamnaconus septentrionalis
摘要
Abstract
To study the ultrastructure of the spermatozoa of Thamnaconus septentrionali, we observed its external form and cross-section structure by scanning and transmission electron microscopy. The spermatozoa of Thamna-conus septentrional consists of a head and tail. The head has no acrosome, is shell-shaped, and its main structure is the nucleus. At its caudal end there is a deep implantation fossa, 5/6 as deep as the head length. We observed the nucleus to consist of electron dense chromatin materials, with a head pit and nuclear vacuole whose chromatin was free. The centriolar compound of the midpiece is situated in the implantation fossa, which consists of three parts:the proximal centriole, the intercentriolar, and the basal body. The proximal centriole and the basal body were ar-ranged orthogonally in a "T" structure, whereas the basal body was parallel to the spermatozoa. The sleeve was very deep, with the deepest point one third of the head length. The implantation fossa are shaped like rods and the sleeve is located behind the nucleus, which contains five to six mitochondria arranged in a circle. We found there to be a few ellipse vesicles in the sleeve outside the mitochondrion. The structure of the flagellum was such that it facili-tated spermatozoa movement. The main structure of the tail was the axoneme, which was slim and long. The tail structure was a typical "9 + 2" model. The flagella were fine and they had no lateral fins. In this paper, we describe the morphological structure of the spermatozoa to enrich our understanding of the physiological contents of teleosts and to provide the basis for the identification of fish species.关键词
绿鳍马面鲀(Thamnaconusseptentrionalis)/精子/超微结构Key words
Thamnaconus septentrionalis/spermatozoa/ultrastructure分类
农业科技引用本文复制引用
刘琨,刘长琳,陈四清,张乐乐,边力..绿鳍马面鲀精子的超微结构[J].海洋科学,2017,41(8):40-45,6.基金项目
中国水产科学研究院黄海水产研究所基本科研业务(20603022016005) [The Basic Research Business of Yellow Sea Fisheries Re-search Institute Chinese Academy of Fishery Sciences, No.20603022016005] （20603022016005）
